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While President Obama stood between his wife and his successor, he made a sweet, subtle gesture that melted the hearts of all those who noticed it.

Obama, the 44th president, had just witnessed the transfer of power to Donald Trump, the 45th president. The new first family was escorting the former residents of the White House to a helicopter when the group paused on the stairs of the capitol building.

That is when Obama grasped his wife's hand and kissed it.

While Michelle Obama thanked a member of the military, Barack Obama's sweet public gesture showed his thanks for her.